Wix Filters 51169 Hydraulic Filter Cartridge Assembly

Wix Filters 51169 is a cartridge-style hydraulic and transmission filter designed for full-flow filtration in heavy-duty hydraulic systems and industrial equipment. This metal canister cartridge uses cellulose filtration media and measures 5.937 inches in height with an outer diameter of 3.593 inches and an inner diameter of 1.406 inches, delivering a nominal 25 micron filtration for hydraulic fluid. It is commonly integrated into Caterpillar construction and industrial equipment such as excavators and graders, providing contaminant removal to protect pumps, valves, and other hydraulic components under high-pressure operation. Cross references include NAPA Gold 1169, with Donaldson hydraulic equivalent OEM references and common replacement options listed.